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https://issues.apache.org/jira/browse/GROOVY-12581?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Scott Murphy Heiberg updated GROOVY-12581:
------------------------------------------
Description:
{code:groovy}
@groovy.transform.CompileStatic
class C {
List<String> log = [];
{ log << new StringBuilder('a').with { append('b'); toString() } }
}
new C() // IncompatibleClassChangeError: Class java.lang.StringBuilder does not
implement the requested interface groovy.lang.GroovyObject
{code}
The type checker records when an implicit-this call in a closure goes to the
delegate, and the static invocation writer then replaces the receiver with
{{this.delegate}}, but keeps the call adapter chosen for a call on {{this}}.
The instance initializer blocks of a {{@CompileStatic}} class are type checked
but their calls get no method targets, so the call is made dynamically with
{{ScriptBytecodeAdapter.invokeMethodOnCurrent}}, which takes a
{{GroovyObject}}. {{with}}, {{tap}} and other delegating closures in such
blocks fail with any delegate that is not a Groovy object. 4.0.33 returns
{{[ab]}}.
PR: https://github.com/apache/groovy/pull/3107
was:
{code:groovy}
@groovy.transform.CompileStatic
class C {
List<String> log = [];
{ log << new StringBuilder('a').with { append('b'); toString() } }
}
new C() // IncompatibleClassChangeError: Class java.lang.StringBuilder does not
implement the requested interface groovy.lang.GroovyObject
{code}
The type checker records when an implicit-this call in a closure goes to the
delegate, and the static invocation writer then replaces the receiver with
{{this.delegate}}, but keeps the call adapter chosen for a call on {{this}}.
The instance initializer blocks of a {{@CompileStatic}} class are type checked
but their calls get no method targets, so the call is made dynamically with
{{ScriptBytecodeAdapter.invokeMethodOnCurrent}}, which takes a
{{GroovyObject}}. {{with}}, {{tap}} and other delegating closures in such
blocks fail with any delegate that is not a Groovy object. 4.0.33 returns
{{[ab]}}.
> SC: a delegating closure in an instance initializer block fails for a
> delegate that is not a Groovy object
> ----------------------------------------------------------------------------------------------------------
>
> Key: GROOVY-12581
> URL: https://issues.apache.org/jira/browse/GROOVY-12581
> Project: Groovy
> Issue Type: Bug
> Components: Static compilation
> Affects Versions: 5.0.8, 6.0.0
> Reporter: Scott Murphy Heiberg
> Priority: Major
>
> {code:groovy}
> @groovy.transform.CompileStatic
> class C {
> List<String> log = [];
> { log << new StringBuilder('a').with { append('b'); toString() } }
> }
> new C() // IncompatibleClassChangeError: Class java.lang.StringBuilder does
> not implement the requested interface groovy.lang.GroovyObject
> {code}
> The type checker records when an implicit-this call in a closure goes to the
> delegate, and the static invocation writer then replaces the receiver with
> {{this.delegate}}, but keeps the call adapter chosen for a call on {{this}}.
> The instance initializer blocks of a {{@CompileStatic}} class are type
> checked but their calls get no method targets, so the call is made
> dynamically with {{ScriptBytecodeAdapter.invokeMethodOnCurrent}}, which takes
> a {{GroovyObject}}. {{with}}, {{tap}} and other delegating closures in such
> blocks fail with any delegate that is not a Groovy object. 4.0.33 returns
> {{[ab]}}.
> PR: https://github.com/apache/groovy/pull/3107
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